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. PUMP SELECTION PROCEDURE <br /> 1. Determine pump capacity: <br /> A. Gravity distribution <br /> 1. Minimum required discharge is 10 gpm <br /> 2. Maximum suggested discharge is 45 gpm. For other <br /> estaUlishments at least 10%greater than the water supply rate, <br /> but no faster than the rate at which effluent will flow out of the <br /> distribution device. <br /> B. 1'ressure distribution <br /> See pressure distribution work sheet <br /> From A or � Selected pump capacity: �_ gpm <br /> 2. Deterrr►ine pump head requirements: <br /> A. Elevation difference between pLunp and point of discharge? soil treatment system <br /> 1� feet &point of discharge <br /> . . QiOQ°D�°:�e:. / / <br /> B. Special head requirement? (See Figure at right - Special Head Requirements) total pipe <br /> length <br /> 5 feet � 2A,elevation <br /> inlet ;r;...;,;,.;.,,<.;.; . <br /> C. Calculate Friction loss -- difference <br /> P�Pe :�. <br /> . <br /> ��. ------- -- -= <br /> 1. Select pipe diameter a.c� in ` <br /> ,. <br /> `� � � I <br /> , <br /> ----------------------------- ------ <br /> 2. Enter Figure E-9 with gpm (lA or B) and pipe diameter (C1). <br /> Read friction loss uz feet per 100 feet from Figure E-9 Special Head Requirements <br /> Friction Loss = �•� ft/100ft of pipe Gravity Distribution 0 ft <br /> 3. Detei-mine total pipe length froin pump discharge to soil treatment Pressure Distribution 5 ft <br /> discharge point. Estimate by adding 25 percent to pipe length for <br /> fitting loss. Total pipe length tirnes 1.25 = equivalent pipe ler�gth <br /> E-9: friction Loss in Plostic Pipe <br /> 1'�Q feet x 1.25 = a o� feet <br /> Per 100 feet <br /> 4. Calculate total,friction loss by multiplying friction loss (C2) nominol <br /> in ft/100 ft by the equivalent pipe length (C3) and divide by 100. pipe diameter <br /> _ �.(o ft/100ft x ���-� =100 - 7 ft tlow rate 1.5" 2" 3" <br /> - pm <br /> D. Total head required is the sum of elevation difference (A),special 2� 2.47 OJ3 0.11 <br /> head requirements (B), and total friction loss (C4) 25 3.73 1.11 0.16 <br /> / �ft+ 5` ft+ 7 ft= 30 5.23 1.55 0.23 <br /> 35 6.96 2.06 0.30 <br /> T�$al �e�C�: a� fe�� 40 8.91 2.64 0.39 <br /> 3. Pump �electioy� a5 11.07 3.28 o.aa <br /> 50 13.46 3.99 0.58 <br /> 55 4.76 0.70 <br /> A pump must be selected to deliver at least�gpm 60 5.60 0.82 <br /> (1A or B) with at least a`� feet of total head (2D) 65 6.48 0.95 <br /> 70 7.44 1.09 <br /> I hereby certify that I have co pleted this work in accordance with applicable ordinances, rules and laws. <br /> �'� �. <br /> � � � �' `�w------ (signature) 3�l (license#) ��0�0---C?�j (date) <br />